immune system
• of pre-B cells at 3 weeks in the spleen and bone marrow
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• as early as 3 weeks of age
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• polyclonal lymphoproliferation at 6 weeks
• increased in the spleen and bone marrow at 6 months
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• expansion of B220low/CD10low/IgM-/CD5-/TCR-/CD43- B cells in the spleen and bone marrow at 3, 6, and 7 weeks and 6 months
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• at 6 months
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• at 3 months
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• decreased splenic lymphoid follicles
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• replaced with red pulp at 6 months
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• expands to replace white pulp at 6 months
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neoplasm
• at 6 months, mice exhibit increased malignant lymphoid population with atypia and blastic appearance that proliferate in the vascular channels of the spleen red pulp and replace the white pulp
• high-grade B cell lymphoma at 6 months
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hematopoietic system
• of pre-B cells at 3 weeks in the spleen and bone marrow
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• as early as 3 weeks of age
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• polyclonal lymphoproliferation at 6 weeks
• increased in the spleen and bone marrow at 6 months
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• in the spleen
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• expansion of B220low/CD10low/IgM-/CD5-/TCR-/CD43- B cells in the spleen and bone marrow at 3, 6, and 7 weeks and 6 months
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• at 6 months
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• at 3 months
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• decreased splenic lymphoid follicles
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• replaced with red pulp at 6 months
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• expands to replace white pulp at 6 months
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growth/size/body
• as early as 3 weeks of age
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endocrine/exocrine glands
cellular
• of pre-B cells at 3 weeks in the spleen and bone marrow
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